19539 ZIP Code — Mertztown, PA

Berks County, Pennsylvania

ZIP code 19539 is located in Mertztown, Pennsylvania, within Berks County. It covers approximately 21.63 square miles and serves a population of 3,998 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 610/484.

About ZIP code 19539

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $244,400. Owner-occupancy is high at 90%, well above the national average.

The gap between median ($100,278) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% is below the national average. 36% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is near the national average, with 30% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of smoking (20%) compared to national benchmarks.

Overall, ZIP code 19539 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,998

population

21.63

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

19539 ZIP code map

Cities in ZIP code 19539

Below are the cities the US Postal Service accepts for ZIP code 19539. Using any city not on this list may result in mail delivery delays.

City	Status
Mertztown	Acceptable
Mertztown	Preferred

Nearby ZIP codes

19562 Topton (1 mi) 18011 Alburtis (2.4 mi) 18031 Breinigsville (4.3 mi) 18062 Macungie (5.3 mi) 19530 Kutztown (6 mi) 18087 Trexlertown (6.3 mi) 19522 Fleetwood (6.9 mi) 18056 Hereford (7.2 mi) 19504 Barto (7.6 mi) 18051 Fogelsville (7.8 mi) 19503 Bally (8 mi) 19505 Bechtelsville (8.3 mi)

Demographics updated 05/2026

Population
Total population	3,998
Population density	185 / sq mi
State FIPS	42
County FIPS	011

Geography
Land area	21.63 sq mi
Water area	0.06 sq mi
Latitude	40.4886
Longitude	-75.6866
Timezone	Eastern (ET)
Area code	610/484

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.9%	37.5%	39.8%
$50k – $100k	33.9%	32.2%	30.8%
$100k – $200k	23.3%	24.6%	22.4%
Over $200k	3.9%	5.7%	7.1%

Demographics & statistics

3,998

Population

185

People per sq mi

45.7

Median age

$100,278

Median household income

$50,170

Per capita income

$244,400

Median home value

$1,088

Median monthly rent

90.0%

Home ownership

3.1%

Poverty rate

1.9%

Unemployment

1,432

Housing units

29.8%

Bachelor's or higher

Age distribution

Male Female

133

Under 5

126

5–9

10–14

110

15–19

104

20–24

246

25–34

231

275

35–44

259

301

45–54

284

149

55–59

140

245

60–64

230

299

65–74

281

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	754	18.9%
18 and over	3,244	81.1%
65 and over	672	16.8%
Median age	45.7 years

Race & ethnicity

White 98%

Black or African American 1.2%

Two or more races 0.8%

Group	Count	%
White	3,918	98%
Black or African American	48	1.2%
Two or more races	32	0.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.9%	37.5%	39.8%
$50k – $100k	33.9%	32.2%	30.8%
$100k – $200k	23.3%	24.6%	22.4%
Over $200k	3.9%	5.7%	7.1%

Under $10k 0.9%

$10k–$15k 1.1%

$15k–$25k 2.3%

$25k–$35k 3.5%

$35k–$50k 11.1%

$50k–$75k 16.5%

$75k–$100k 13.6%

$100k–$150k 32.6%

$150k–$200k 7.4%

$200k+ 11.0%

Range	% of households
Under $10k	0.9%
$10k–$15k	1.1%
$15k–$25k	2.3%
$25k–$35k	3.5%
$35k–$50k	11.1%
$50k–$75k	16.5%
$75k–$100k	13.6%
$100k–$150k	32.6%
$150k–$200k	7.4%
$200k+	11.0%
Median income	$100,278

Housing

Home values

Under $50k 1.3%

$50k–$100k 2.5%

$100k–$150k 5.5%

$150k–$200k 23.4%

$200k–$300k 32.0%

$300k–$500k 26.2%

$500k–$1M 7.1%

$1M+ 2.1%

Housing overview

Metric	Value
Median home value	$244,400
Median rent / month	$1,088
Owner occupied	90.0%
Renter occupied	10.0%
Vacant	0.4%
Single-family detached	94.0%
Large apartment buildings	0.0%
Mobile homes	1.9%
Median rooms	7.3
Avg household size (owned)	2.51

Year built

Era	%
2020 or later	0.0%
2010–2019	2.6%
2000–2009	6.2%
1990–1999	18.9%
1980–1989	12.1%
1970–1979	17.7%
1960–1969	9.3%
1950–1959	8.7%
1940–1949	4.2%
1939 or earlier	20.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.3%
2 bedrooms	17.0%
3 bedrooms	44.2%
4 bedrooms	32.9%
5+ bedrooms	2.5%

Vehicles per household

Vehicles	% of households
No vehicle	1.7%
1 vehicle	14.0%
2 vehicles	44.4%
3 or more	40.0%

Heating fuel

Fuel type	%
Utility gas	1.8%
Electricity	31.5%
Propane / LP gas	12.6%
Fuel oil	39.6%
Wood	11.0%

Households & families

Household type	Count	%
Married-couple family	998	63.0%
Cohabiting couple	118	7.4%
Male householder, no spouse	225	14.2%
Female householder, no spouse	243	15.3%
Households with children under 18	454	28.7%
Households with seniors (65+)	514	32.4%
Average household size	2.52

Marital status

Status	Male	Female
Never married	30.3%	16.5%
Married	58.9%	63.3%
Separated	0.0%	1.8%
Widowed	1.8%	12.7%
Divorced	9.0%	5.8%

Education

Less than 9th grade 0.5%

Some HS, no diploma 1.9%

HS graduate 34.1%

Some college, no degree 18.2%

Associate's degree 15.4%

Bachelor's degree 16.7%

Graduate / professional 13.2%

Metric	%
HS diploma or higher	97.6%
Bachelor's or higher	29.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	52	7.7%
Kindergarten	11	1.6%
Elementary school	317	47.1%
High school	178	26.4%
College / grad school	115	17.1%

Employment

Industry of employment

Education & healthcare 28.0%

Manufacturing 24.9%

Arts, food & hospitality 10.5%

Other services 8.0%

Professional & management 7.8%

Construction 4.8%

Retail trade 4.6%

Transportation & utilities 4.6%

Finance & real estate 3.0%

Public administration 1.4%

Information 1.1%

Wholesale trade 0.8%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	39.3%
Service	14.4%
Sales & office	12.1%
Natural resources & construction	9.3%
Production & transportation	24.8%

Employment type

Type	%
Private sector	84.4%
Government	11.4%
Self-employed	4.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.0%
Carpool	10.6%
Public transit	0.0%
Walk	1.3%
Work from home	11.1%
Other means	0.0%
Avg commute (minutes)	22.0

Poverty

All people 3.1%

Under 18 years 6.8%

18 and over 2.2%

Married-couple families 0.0%

Female-led households 7.3%

Income support

Source	% of households
Social Security	35.7%
Retirement income	27.8%
Supplemental Security	1.7%
Cash public assistance	3.5%
Food stamps / SNAP	2.3%

Health indicators

Condition	%
Obesity	36.8%
High blood pressure	31.9%
High cholesterol	33.3%
Diabetes	10.2%
Heart disease	6.6%
Stroke	2.9%
Asthma	10.0%
Arthritis	27.6%
Kidney disease	2.8%
Pulmonary disease	7.7%
Cancer	7.0%

Behavior / access	%
Smoking	20.1%
Binge drinking	19.6%
No physical activity	23.7%
Less than 7 hrs sleep	34.6%
Depression	22.3%
Fair or poor health	13.9%
Poor mental health	15.5%
Poor physical health	10.9%
No health insurance	10.4%
Visited doctor (checkup)	76.8%
Visited dentist	68.2%
Cholesterol screening	89.7%
Teeth loss	14.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	134	4.1%

Disability	%
Any disability	8.8%
Under 18	8.2%
18–64 years	4.9%
65 and over	24.4%

Health insurance coverage

Type	%
Private insurance	81.5%
Public insurance	23.2%
No insurance	3.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,739	93.5%
Spanish	7	0.2%
Other Indo-European	0	0.0%
Asian & Pacific Islander	7	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,940	98.5%
Born in same state	3,901	97.6%
Born in different state	3,448	86.2%
Foreign born	39	1.0%
Naturalized citizen	58	1.5%
Not a US citizen	58	100.0%

Ancestry

Ancestry	Count	%
Italian	450	11.3%
French	272	6.8%
Arab	246	6.2%

Ancestry	Count	%
English	95	2.4%
Norwegian	31	0.8%
Irish	16	0.4%

Technology access

Metric	% of households
Computer access	39.6%
Internet access	96.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 19539

What city is ZIP code 19539 in?

ZIP code 19539 is primarily assigned to Mertztown, Pennsylvania.

What county is ZIP code 19539 in?

ZIP code 19539 falls within Berks County, Pennsylvania.

Is ZIP code 19539 mostly owner-occupied?

90% of occupied units in ZIP code 19539 are owner-occupied, well above the national average.

Does ZIP code 19539 have a large retiree population?

36% of households in ZIP code 19539 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 19539?

ZIP code 19539 has an estimated population of 3,998 residents, with a density of 185 people per square mile.

What is the median household income in ZIP code 19539?

The median household income in ZIP code 19539 is $100,278, above the national median of ~$75,000.

What timezone is ZIP code 19539 in?

ZIP code 19539 observes the EST timezone.